Table 2.
Comparison of baseline characteristics between OSA patients with and without RH in the training set.
| Characteristic | OSA patients | P | |
|---|---|---|---|
| Without RH (n = 423) | With RH (n = 116) | ||
| Sex | |||
| Male | 331 (78.3%) | 106 (91.4%) | 0.001 |
| Age (year) | 52.15 (13.71) | 52.66 (13.17) | 0.719 |
| BMI (kg/m2) | 26.83 (3.81) | 28.99 (4.26) | < 0.001 |
| Smoke | 135 (31.9%) | 63 (54.3%) | < 0.001 |
| Alcohol | 52 (12.3%) | 13 (11.2%) | 0.75 |
| Family history of hypertension | 113 (26.7%) | 56 (48.3%) | < 0.001 |
| Heart disease | 44 (10.4%) | 27 (23.3%) | < 0.001 |
| Diabetes | 68 (16.1%) | 33 (28.4%) | 0.002 |
| Neck circumference (cm) | 35.81 (1.90) | 37.32 (2.12) | < 0.001 |
| Waist circumference (cm) | 94.46 (4.98) | 97.47 (4.85) | < 0.001 |
| ESS | 10.21 (2.99) | 12.61 (3.1) | < 0.001 |
| Total sleep time (h) | 7.47 (1.86) | 7.18 (1.96) | 0.148 |
| AHI | 26.26 (15.78) | 41.61 (19.84) | < 0.001 |
| T90 (%) | 1.16 (4.59) | 9.35 (22.19) | < 0.001 |
| ODI | 11.73 (20.18) | 28.67 (34.07) | < 0.001 |
| LSaO2 (%) | 76.79 (11.16) | 74.79 (8.53) | 0.075 |
| MSaO2 (%) | 95.41 (2.12) | 92.88 (8.62) | < 0.001 |
| TC (mmol/L) | 4.29 (0.98) | 4.41 (1.01) | 0.253 |
| Triglyceride (mmol/L) | 1.98 (1.69) | 2.08 (1.81) | 0.572 |
| HDL (mmol/L) | 1.12 (0.25) | 1.08 (0.21) | 0.077 |
| LDL (mmol/L) | 2.55 (0.77) | 2.64 (0.72) | 0.241 |
| FBG (mmol/L) | 5.68 (1.42) | 6.11 (1.94) | 0.009 |
RH, resistant hypertension; BMI, body mass index; ESS, Epworth sleepiness scale; AHI, apnea–hypopnea index; T90, percentage of total time with oxygen saturation level < 90%; ODI, oxygen desaturation index; LSaO2, lowest arterial oxygen saturation; MSaO2, mean arterial oxygen saturation; TC, total cholesterol; HDL, high density lipoprotein; LDL, low density lipoprotein; FBG, fasting blood glucose.